A collection of large, yet perfectly balanced architectural masterpieces in harmony with the natural landscape, the Acropolis of Athens is one the most important expressions of Classical Greek aesthetics. It was completed by the 5th century BC. Since then it has had much influence on architecture worldwide.[2]

The ancient city of Aigai was the first capital of the Kingdom of Macedon. In addition to the monumental palace, lavishly decorated with mosaics and painted stuccoes, the site has a burial ground with more than 300 tumuli. One has been identified as that of Philip II of Macedon, father of Alexander the Great.[3]

The pan-Hellenic sanctuary of Delphi, location of the oracle of Apollo, was the spiritual center of the Greek world. It is in a spectacular natural setting at the foot of Mount Parnassus. It was a symbol of Greek cultural unity from the 8th century BC onwards.[4]

Long known as "the Wonder of the Morea", the very well-preserved medieval city of Mystras played a central role in the final years of the Byzantine Empire. Built on a steep hill at the foot of Mount Taygetus, it was the last Byzantine stronghold to fall to the Ottomans.

The site of Olympia, built on the banks of the Alpheios river in the Peloponnese, was the place of the ancient Olympics beginning in 776 BC. In addition to numerous temples and sanctuaries, it has the remains of several sporting structures, such as its famous stadium.

Mycenae and Tiryns were two of the most important cities of Mycenean Greece, which flourished between the 15th and 12th centuries BC. The Lion's Gate and Treasury of Atreus at Mycenae have been listed as "outstanding examples of human creative genius".

The birthplace of Apollo and Artemis according to Greek mythology, the sacred island of Delos was one of the most important pan-Hellenic sanctuaries. The sanctuary of Apollo on Delos attracted pilgrims from all over Greece, making Delos a prosperous trading port.